thankyou for your help but i found the proublem, for some reason my controls were changed without me doing so, they are back to normal now though :3

tried the folder but it still wont work =/

no mods, just downloaded maps such as survival map if that counts? :S and the entire folder?

ok so I decided to play some single player only to find that i couldnt move. restarted my comp n found out that the server wsa back up. same problem aswell as unable to open up chat window. all i can do is look around, jump and hit things within reach =[ any ideas on a fix?